Wheel hub wear plate



Aug'.2, 1932. J. PURCELL 1,869,390

WHEEL HUB WEAR PLATE Filed Dec. 6. 1950 3 sheets sheet '1 Z2144 ym -91kg. '18

Im/en or I i-r g I V.

WHEEL HUB WEAR PLATE Filed Dec. 6, 1950 3Sheets$heet 2 Imfen or Witnesses UZ'L ydlw-vil 4:4. z

Patented Aug. 2, 1932 stares,

JOHN rnnonrt, or

UNITE CHICAGO, 'I'LLI'NOIS j WH EL HUB WEAR PLATE:

Application filed December 6, 1930. Serial No. 500,542.

My invention relates to wear or liner plates adapted to be applied intermediate of the hubsof the wheels and the hubtaces' of the journal boxes of locomotives and railroad 5 cars for the purpose of protecting'the opposing faces of the wheel-hub and of the journal box against wear. 7

My invention also has for its object the provision of a wear plate whereby heat gen- 10 erated by the frictional contact encountered during movement of the locomotive or car will be dissipated or rapidly radiated to the atmosphere, thereby preventing the wheelhubs and journal or driving boxes becoming excessively hot. I i The objects and advantages of myin'vention'will be readily comprehendedirom the following detailed description of the accompanying drawings, wherein i Figure 1 is a verticalsectional .view of a locomotive driving wheel and driving or journal box, with my improved wear plate shown applied to the wheel. Figure 2 is an enlarged sectional elevation, the view beingtalren substantiallyon the line 2- 2 of Figure 1, as viewed bythe arrows. v Figure 3 is an enlarged sectional, view taken substantially along the off-set line 3-3 of Figure 2, looking in the direction of the arrows. t

Figure 4c' is an enlarged detail sectional view, taken on the-line of Figure 2 looking in the direction of the arrows. V l Figure 5 is a View similar to Figure 1 showing the application of my improved wear plate to a truck wheel of the inside bearing'type.

Figure 6 isan enlarged sectional elevation taken'substantially on'the line 66 oi Figure 5,1ooking in the direction or: the arrows.

Figures 7 and 8 are, respectively, perspec tive views of the two segments of my wear plate as formed for mountedwheels of the inside bearing type. j v 1 Figure 9 is a sectional view of a wheel of the'outside bearing types and provided with my improved wear plate.

Figure 10 is a sectional view similar to Fig- 50 ure .3, illustrating a modified form.

' My'improved wear plate is preferablyin the form of an annular memberor ring ofadlameter substantially equal to thediameter of the side face of the hub of the wheel andin the exemplifications disclosed in the firsteight figures of the drawings is shownimade in, segments in'order to permit applicationto'be 1 inside bearing'type. Y

.In Figure 1, my improved wear plateyisi ,made to assembled trucks with wheelsof the:

shown applied to a locomotive driving wheel: 1

hub indicated at 15, secured to'a journalof which a portion is shown at 16, which is j ournaled in the usualdrive or journal-box 17.

' Considerable wear on the hubs ofwheelsis encountered duringloperation due to the :fric tional contact between the wheel-hubs. and the journal-boxes, especially where the tracks have sharp and frequentcurves, Such fri'ctional contactnot only results in rapid wear,

but also in excessive heating of ithe'hubs' of l the wheels and ofthe journal-boxes. l:

YVhere my improved wear plate as tofbe applied to a wheel before it is mounted, or to" a wheel of the'outside bearing type, itcon r sists preferably of an annular plate or ring 18 of diameter substantially equal to thediameter of the hub face disposed toward :the

journal-box. The plate 18 is provided cen trally with a hole slightly larger thanthe diameter ofthe ournal 16, so as to provide a space between the inner periphery of the plate 7 andthe journal, as shown at 19. j j Where my improved wear plate is intended. for application to mounted wheels of theinside bearing type as shown in Figures 1 and 5, the plate may be made in two half segments:

or sections 18 and 18 as shown in Figures 7 and 8. Or theplate 18, after being machined to suit the particular application or; wheel,-is split along the line indicated at'20 in Figure 2, and-the abutting edges of the segments given a slight bevel as shown at 21' in Figures 7 and 8 in order to provide a-better welding joint as shown at '22 in Figure 4:. This enables each half segment to be separately. applied to the wheel-hub andfitted about the axle or journal.

As one object of my invention istheipro- 'm'o I vision of an air space between the wear plate l and the wheel-hub to which it is attached, I

provide means for maintaining a spaced reation. between the plate and the object. to which it is attached.

In the specific exemplification of the invention, this means preferably consists of a number of integral projections or bosses 23 on the side of the plate which is intended tohe dis- I posed toward the wheel-hub to which it is to be attached. In order to properly maintain the proper spacingthrou'ghouua number of bosses 23 are providedand spaced equal distances apart circumferentially about the plate as shown in dotted lines in Figure 2 and preferably'in a circumferential plane centrally between the'outer and innerperipheries'of the plate-as shown.

position of the plate 18 or the plate segments 18 and 18 I prefer'to provide the sideface of the wheel-hub 15 with a corresponding number ofre cesses adapted to snugly receive the respective bosses 23, as shown :at 24C in Figures 1; and 3; or'these recesses 24 may be made continuous so as to provide aniannular groove ofjwidth suficientto snugly receive the bosses23. It will be understood, how-- ever, 'thatthe recesses 2a, or groove, are of a :depth less than the thickness of the bosses so that'the latter are only partially embedded in the recesses, as shown in'Figure's 1 and 3.

of the holes preferably flared as-shown at 25, see' Figure 3,.and one side of the fiaredpore tionof each hole 25 preferablyprovided with 7 a small groove-as at 26, andshown in dotted,

lines in Figure 2. The wheel h'ub side face, at points registering with the holes in the bosses, isprovided with threaded holes'adapt- [ed to receive the threaded ends of the' screwplugs 27. After the plugs 27 have been firmly screwed into the threaded holes and caused to bottom therein, the outer plainendofeach plug is then, riveted 'or upset so as to completely fill the countersunk or flared hole,

causing a portion of the riveted or upsetend of'the plug to enter the groove. 26, thereby effectively locking the screw-plugagainst un screwlng; while the outerends ofthe plugs are caused to be flush with the outer face of V the plate 18.

While I prefer to partially embed the bosses in recesses as descr1bed, if des1red,lthe recess may be om tted and the bosses made to 'i" lfia ac ft e dlrecfly the l 6 0 application to a locomotive drive wheel as 2 shown in Figures 1 to 3, inclusive.

wheel-hub, as shown at 28 in F igur-e10.

The original shape or condition of the screw-plugs 27 is shown-in dotted lines in "Figures 3 and 10; that is to say the; outer ends of the screw-plugs. are shown before being riveted over or u set asheretofore de scribed.

I also prefer to provide the hub facing side of the wear plate 18 with series of smaller projections or bosses 28, located preferably near to the outer periphery: of the plate and at equally spaced points disposed porting the wear plate to maintain an air space between the plate and the wheel hub face. 4

In Figure 5, I show the application of my improved plate to the hub of the wheel 29 of the inside bearing type namely with the journal box 30 located on the innerside of the wheel about the journal 31. Except for In order to assist in maintaining the proper size or diameten'the plate 18 is identical with thatheretofore described; and in view.

at the points 22 as previously described;

In this application, like in the application to the locomotive drive wheel, the platehas been shown applied to the hub of'th'e wheel, by providing the hub face either-with a conv tinuous 'annula rece r' w'th se" f l- T The plate and each-boss is providedwith a' r 0 1 a mes 0 re hole therethrough with the outer'or plate sidef cesses-adapted to partially receive the" outer ends of the bosses 23; the botto'rns of the re 1 cesses'having threaded holes to receive the threaded ends of the screwgplugs 27 all as heretoforestated. i c In Figure 9, I showlthe application of'my improved plate to the outer hub face of a wheel 32 of the outside bearing type, namely a type where thejournal 33 extends through the hub of the wheel into the outside'journal box 3 1. The wear plate 18 for applications 'of this type may be made continuous as previously stated, being of the same construction as heretofore described, with its attaching bosses '28' preferably 'partiallyinserted in the face of the wheel hub and' aperturedto receive the screw plugs 27 whose outer ends are upset or riveted as heretofore] .11":

described in order that they may come flush with the outer face of the-plate 18.

The plates in the applications shown in.

Figures 5 and 9, it will he understood, are in every respect sirnllar to the construction of the plate as described in connectionwith the My improved wear plate maybe made of any suitable material adapted to provide the bestv anti-friction characteristics and: it will vide the circumferential air admitting space Y 19 heretofore referred to.

With my improved plate secured in place, air is permitted to flow through the circumferential opening 19 into the space intermediate of the plate and the hub of the wheel; the flow or more or less rapid circulation of air being induced by the rapidly revolving movement of the bosses or spacer elements, which impart a revolving motion to the air. This movement of the air causes it to move out radially from between the plate and the hub face which in turn induces a flow of air through the space 19. This constant radial movement or outward flow of air tends to cool the plate as well as the hub of the wheel by constantly carrying away the heat, which may be generated in the plate due to its frictional contact with the hub face of the j our nal box, and thus prevents the heat being imparted to the hub of the wheel.

It is also apparent that with the plate rigidly secured to the wheel hub, a running hearing for the hub face of the journal box is provided and consequently the effects of friction and wear are sustained by the plate and not by the hub of the wheel.

As a result, the wear or damage resulting from the frictional contact is sustained by a less expensive part or element of the running gear, namely'by a part which can be more readily removed and renewed without loss of a more expensive wheel and without necessity of dismantling the running gear of a railroad car or of the drive wheels of a locomotive. In providing my improved plate with the spaced apart air whipping projections or.

of description and not as terms of limitation,

structural modifications may be made without, however, departing from the spirit of my invention.

What'I claim is:

1. A wear plate of the character described provided with a central opening for passage of a wheel journal therethrough, said. opening being of a diameter larger than the diameter of the journal so as to provide an an nular air space, the attaching side of the plate being provided with spaced apertured bosses adapted to maintain the plate in fixed spaced relation with the element to which it is secured, and means disposed through the plate and the apertures in the bossesfor securing the plate in place,

2-. A wear plate of the character described 1 provided with-a central opening adapted for passage of a wheel journal therethrough, the

plate at its central opening being formed to permit flow of air about-opposite faces of the plate, the attaching side ofthe platebeing provided with projecting portions for maintaining the plate in spaced relation with the element towlii'ch'it is secured, said proj-ecting portions being formed-to permit flow V of air thereabout, certain ofsaid projecting portions being aper'tured to receive means for securing the plate in place. r "3. A wear plate of the characterdescribed provided witha central opening for passage of a wheel journal therethrough; said opening being of larger diameter than the ,di-

ameter of the journal to permit air circulation therethrough, means arranged on the attach ing side of theplate'for maintaining the plate in spaced relation with-the element to which the plate isl'to be, secured, said plate being provided with flared apertures adapted t'o receive'mea'nsffor securing'tl'ie plate in place and Permit Said means o x n ush;weh the outer face flth p Y j I A wear plate of the character describedprovided with a central opening ad'aptedfor passage Of'awheel ournal ther-ethrough, said i v openingbeing'of a diameter largerlthan the diameter of thejotirnrl so as to provide-a circumferential air-spacebetweenT the plate i v and journal, means arranged on the attach ing side of theplate-wherebythe plate'is maintained in spaced relation with theele ment'to which it is secured, said means being arranged to permit free passage of air. 7

5. A wear plate of the character described provided with a central opening adapted for passage'of a wheel j ournaltherethrough,said

opening being of a diameter larger than: the i diameter of the journal so as to provide'an annular space between the plate and journal, one face of the plate, at circumferential points intermediate of its inner and outer-*perimeters, being provided with spaced apart aper tured attaching bosses and with spaced apart bosses arranged. circumferentially' adj acentto the outer perimeter of the plate and disposed at points intermediate of the first mentioned bosses, and means disposed through V theapertured bosses for securing the plate in place. I 6. A wear plate of the character described comprising a plate of predetermined dimensions to fit betwen a wheel-hub and theadjacent side of a j ournal-box and provided with an, opening for passage of awheel journal therethrough, the opening being oflarg-er diameter than the diameter of thejournal to permit air circulation therethrough, said plate on its attaching face having a plurality of protrudingportions arranged-in spaced nalto permit air circulation, the attaching relation wherebvthe plate is held in spaced relation with the element to' which it'is secured, and circulation of air thereabout peri' mitted, the plate being provided with screw plug receiving apertures whose outer ends are countersunk and provided with grooves sage of a wheel journal therethrough and of 7 larger diameter than the diameter of the jour;

face of the plate being provided withaplurality of spaced bosses arranged circumferentially on'said face; with'certain of said v bosses being aperturedto receive screwsplugs and the outer ends of the apertures enlarged in anon-circular manner whereby theouter ends of the screw -plugs'may be riveted flush 'withthe face ofltheplate andlocked against a if rotation. -1- a I .8. VA'wear plate ofthe character described comprising a plate of predetermined dimen- L sions to fit between a wheel-hub and a journalboX and providedwith aniopening for pas- V .sage of a-wheel journal therethrough: and of larger diameter thanthe diameter of the journal to'permitair circulation therethrough, the

attaching face of the plate being provided i with a plurality ofcircumferentially spaced bosses, certain of said'bosseshaving screwplug receivingaperturesenlarged at the outer V ends in a non-circular manner, the element to which the plate is to be attached being provided withsockets ofdepthless thanthe length of the apertured bosses and adapted to receive the ends of said bosses, with threaded holes in the bottoms ofsaid sockets; and-screwplugs adapted to pass through the apertured v bosses and to screw into the'threaded holes,

the outerlends of the screw-plugs beingriv- I eted flush with the face of theplate and so 'as'fto fill the enlarged 'outer ends 1 of the l apertures in said bosses.- 

